This beginner tip actually works!
Here's some tools you might need:
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TapeBudy Mixit: https://amzn.to/3O3b5hN
Tapebuddy: https://amzn.to/46WDA9E Here’s a video for using the tape buddy:   • How to use the Tape Buddy  
The BEST mudpan EVER! https://amzn.to/44BPbZZ
4 inch knife: https://amzn.to/43CgnXr
6 inch knife: https://amzn.to/3O1XUOi
Hawk: https://amzn.to/3DqxMaK
Some nice 12x5 Trowels:
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Corner Roller: https://amzn.to/3Dpb8j2
Tape Holder: https://amzn.to/3Ya0vu3
Foam Backed Sandpaper: https://amzn.to/3yl0FG7